#include <iostream>
#include <string>

using namespace std;

class num
{
public:
    int val;

    int operator+(num & n)
    {
        return n.val - this->val;
    }
};


int main(int argc, char const *argv[])
{
    
    int val_1;
    int val_2;
    num n_1;
    num n_2;

    cin >> val_1;
    cin >> val_2;
    n_1.val = val_1;
    n_2.val = val_2;

    int i = n_1 + n_2;
    cout << i << endl;
    
    return 0;
}
